When you want to test a composite in SOA 11g you will see something similar to this screenshot :

You would want to change the "localhost.localdomain" part of the URL to some other hostname - for example I will use "deskLinux". To do this you need to modify the ServerURL and CallbackServerURL in the SOA configuration. This can be easily done via SOA Enterprise Manager :

1. Right Click on SOA-INFRA component in the left navigation tree. Go to Soa Administration --> Common Properties

2. Set the CallBackServerURL and the ServerURL to http://deskLinux:8001 and click Save button

3. Restart SOA server to activate the changes . The URL should now be modified for all composites.